/*
 * Copyright © 2015 Cask Data, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package co.cask.cdap.data.stream;

import java.io.Closeable;

/**
 * A {@link Closeable} that also provides timestamp when the actual close operation happened.
 */
public interface TimestampCloseable extends Closeable {

  /**
   * Returns timestamp in milliseconds when the close operation happened.
   *
   * @throws IllegalStateException if close operation hasn't been performed
   */
  long getCloseTimestamp();
}
